Parsing error fix

Error was "docker: invalid reference format: repository name must be lowercase.". Solution found here: https://stackoverflow.com/questions/48522615/docker-error-invalid-reference-format-repository-name-must-be-lowercase

build_deps.sh

 #!/bin/bash
 cd mirador-video-annotation
-docker run --rm -v $PWD:/opt -it node:12 /bin/sh -c "cd /opt && npm install && npm run build:es"
+docker run --rm -v "$(pwd):/opt" -it node:12 /bin/sh -c "cd /opt && npm install && npm run build:es"
 cd ../annotations-plugin
-docker run --rm -v $PWD:/opt -it node:12 /bin/sh -c "cd /opt && npm install && npm run build"
+docker run --rm -v "$(pwd):/opt" -it node:12 /bin/sh -c "cd /opt && npm install && npm run build"